Waste heat recovery device for chemical device

Abstract

The utility model discloses a waste heat recovery device for a chemical device, which belongs to the technical field of waste heat recovery and comprises a heat exchange box, an exhaust port and an air inlet, the exhaust port and the air inlet are respectively positioned at two ends of the heat exchange box, partition plates are fixed at two ends inside the heat exchange box, and a transfer bin is formed between the side edges of the partition plates and the end parts of the heat exchange box. And parallel air guide pipes are uniformly arranged between the two groups of partition plates. The parallel air guide pipes are evenly arranged in the heat exchange box, the sliding disc is arranged between the air guide pipes in a sliding mode, the sliding holes allowing the air guide pipes to penetrate through are formed in the sliding disc, and meanwhile the bristles are arranged in the sliding disc. The horizontal movement of the sliding block is controlled so as to control the movement of the sliding disc, sliding of the sliding disc can be continuously controlled in a reciprocating mode in the using process, water scale is effectively avoided, and cleanliness is guaranteed.

Description

Technical Field

[0001] The utility model relates to a waste heat recovery device, in particular to a waste heat recovery device for a chemical plant, and belongs to the technical field of waste heat recovery. Background Art

[0002] In the prior art, for example, the utility model with application number 202322306382.8 discloses a flue gas waste heat recovery device. In order to solve the problem that scale will form on the outer wall surface of the air duct after the waste heat recovery device has been used for a period of time, thereby affecting the heat exchange efficiency, a rotatable air duct is arranged inside the heat exchange box, and then used in conjunction with a cleaning mechanism on the top, the air duct can be turned over for cleaning to ensure the cleanliness of the surface of the air duct.

[0003] Similar to the above application, there are still some shortcomings:

[0004] The device uses regular cleaning to clean the scale during use, but the scale has a strong adhesion ability after formation, which makes cleaning inconvenient. In addition, the cleaning process requires the use of multiple sets of electrical appliances, which is cumbersome to control.

[0005] Therefore, a waste heat recovery device for a chemical plant is designed to optimize the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a waste heat recovery device for a chemical plant, by evenly arranging mutually parallel air ducts inside a heat exchange box, and sliding plates are slidably arranged between the air ducts, and sliding holes for the air ducts to pass through are opened on the sliding plates, and bristles are arranged inside the slide, and in addition, the horizontal movement of the slider is controlled by the rotation of the reciprocating screw to control the movement of the sliding plate, and the sliding of the sliding plate can be continuously reciprocated and controlled during use, effectively avoiding the generation of scale and ensuring clean cleaning, and by arranging a rotating mechanism composed of an inner tube, a shaft, an impeller, an incomplete gear, and a driven gear at the end of the reciprocating screw, the rotation of the impeller can be automatically controlled during the air intake process, and then the rotation of the driven gear at the end of the reciprocating screw can be slowly controlled by the incomplete gear, without the need for electric power to drive, a more flexible structure can be used, and the control is more convenient.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A waste heat recovery device for a chemical plant comprises a heat exchange box and an exhaust port and an air inlet respectively located at both ends of the heat exchange box, partitions are fixed at both ends of the interior of the heat exchange box, a transfer bin is formed between the side of the partition and the end of the heat exchange box, air ducts parallel to each other are evenly arranged between the two groups of partitions, water pipe joints are arranged at the top and bottom of the outer side of the heat exchange box, and the water pipe joints are located between the two groups of partitions, a reciprocating screw is rotatably installed at the middle position of the two groups of partitions, a slider sliding along the length direction of the reciprocating screw is arranged on the reciprocating screw, a sliding disk is fixed on the outer side of the slider, the air ducts all pass through the inside of the sliding disk, a sliding hole cooperating with the air duct is opened on the sliding disk, and bristles are arranged on the inner side of the sliding hole, and a rotating mechanism for controlling the rotation of the reciprocating screw is arranged inside the transfer bin at one end of the heat exchange box close to the air inlet.

[0009] Preferably, a gap is left between the outer side of the sliding plate and the inner wall of the heat exchange box, and a guide hole is opened on the sliding plate.

[0010] Preferably, the air guide tubes are evenly distributed between the two groups of partitions in a circular array, and are made of copper-aluminum alloy.

[0011] Preferably, flanges are provided at the ends of the exhaust port and the air inlet, and mounting holes are evenly provided on the flanges.

[0012] Preferably: the rotating mechanism includes a shaft, an impeller, an incomplete gear and a driven gear, the shaft is horizontally mounted inside the transfer bin, one end of the shaft extends to the inside of the air inlet, the end of the shaft located inside the rotating mechanism is mounted with an impeller, the end of the shaft away from the impeller is mounted with an incomplete gear, the driven gear is mounted at the end of the reciprocating screw, and the driven gear is meshed with the incomplete gear.

[0013] Preferably, an inner tube is fixed inside the air inlet, the inner diameter of the inner tube is smaller than the inner diameter of the air inlet, and the impeller is located inside the inner tube.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a waste heat recovery device for a chemical plant, wherein air ducts parallel to each other are evenly arranged inside a heat exchange box, and a sliding plate is slidably arranged between the air ducts, and a sliding hole for the air duct to pass through is opened on the sliding plate, and bristles are arranged inside the sliding plate, and the horizontal movement of the slider is controlled by the rotation of the reciprocating screw rod, thereby controlling the movement of the sliding plate, and the sliding of the sliding plate can be continuously reciprocated during use, effectively avoiding the generation of scale and ensuring cleanliness;

[0016] By arranging a rotating mechanism consisting of an inner tube, a shaft, an impeller, an incomplete gear, and a driven gear at the end of the reciprocating screw, the rotation of the impeller can be automatically controlled during the air intake process, and then the rotation of the driven gear at the end of the reciprocating screw can be slowly controlled through the incomplete gear. No electric power is required for driving, a more flexible structure is used, and the control is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front cross-sectional view of the utility model;

[0018] Figure 2 For the utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a structural diagram of the sliding disk of the utility model;

[0020] Figure 4 It is the front view of the utility model.

[0021] In the figure: 1. heat exchange box; 2. exhaust port; 3. air inlet; 4. partition; 5. transfer chamber; 6. air guide pipe; 7. water pipe joint; 8. reciprocating screw; 9. slider; 10. sliding disk; 11. sliding hole; 12. bristles; 13. rotating mechanism; 14. inner tube; 15. shaft; 16. impeller; 17. incomplete gear; 18. driven gear. DETAILED DESCRIPTION

[0022] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0023] like Figure 1-Figure 4 As shown, the present embodiment provides a waste heat recovery device for a chemical plant, comprising a heat exchange box 1 and an exhaust port 2 and an air inlet 3 respectively located at both ends of the heat exchange box 1, partitions 4 are fixed at both ends of the interior of the heat exchange box 1, a transfer bin 5 is formed between the side of the partition 4 and the end of the heat exchange box 1, and air guide pipes 6 parallel to each other are evenly arranged between the two groups of partitions 4, water pipe joints 7 are arranged at the top and bottom of the outer side of the heat exchange box 1, and the water pipe joints 7 are located between the two groups of partitions 4, and a reciprocating screw 8 is rotatably installed at the middle position of the two groups of partitions 4, and a slider 9 sliding along the length direction of the reciprocating screw 8 is provided on the reciprocating screw 8, and a sliding disk 10 is fixed on the outer side of the slider 9, and the air guide pipes 6 all pass through the inside of the sliding disk 10, and a sliding hole 11 cooperating with the air guide pipe 6 is opened on the sliding disk 10, and bristles 12 are provided on the inner side of the sliding hole 11, and a rotating mechanism 13 for controlling the rotation of the reciprocating screw 8 is provided inside the transfer bin 5 at one end of the heat exchange box 1 close to the air inlet 3.

[0024] The overall working principle: during the preheating and recovery process, the air inlet 3 is connected to the flue gas duct, and water is injected into the heat exchange box 1 at the same time. Water enters from the water pipe joint 7 at the bottom of the heat exchange box 1, and the hot water after heat exchange is discharged from the water pipe joint 7 at the top. The flue gas enters the interior of the transfer bin 5 through the air inlet 3, and then enters the interior of multiple groups of air ducts 6 after diversion to ensure the heat exchange effect of the flue gas. The flue gas after heat exchange enters the interior of the transfer bin 5 at the other end and flows out after rectification. During the preheating and recovery process, the rotating mechanism 13 is used to continuously control the rotation of the reciprocating screw 8. The rotation of the reciprocating screw 8 will drive the slider 9 to reciprocate along the length direction of the reciprocating screw 8, and the sliding disk 10 is fixed on the slider 9, so the sliding disk 10 will also slide back and forth, and the bristles 12 inside the sliding hole 11 are used to reciprocate and wipe the outside of the air duct 6, which effectively prevents scale from adhering to the air duct 6 and ensures the heat conduction effect.

[0025] In this embodiment, a gap is left between the outer side of the sliding plate 10 and the inner wall of the heat exchange box 1 , and a guide hole is opened on the sliding plate 10 .

[0026] Partial working principle: During the reciprocating movement of the sliding plate 10, the liquid inside the heat exchange box 1 will be driven to flow, thereby increasing the liquid flow rate and improving the heat exchange effect.

[0027] In this embodiment, the air guide tubes 6 are evenly distributed between the two groups of partition plates 4 in a circular array, and the air guide tubes 6 are made of copper-aluminum alloy.

[0028] Local working principle: Through the evenly arranged multiple groups of air guide pipes 6, the intake air can be divided into multiple parts for transportation, thereby improving the heat exchange rate and effect.

[0029] In this embodiment, flanges are provided at the ends of the exhaust port 2 and the inlet port 3, and mounting holes are evenly formed on the flanges.

[0030] Partial working principle: During installation and use, the flange can be used to directly connect and fix the pipeline, making it more convenient to use.

[0031] In this embodiment, the rotating mechanism 13 includes a shaft 15, an impeller 16, an incomplete gear 17 and a driven gear 18. The shaft 15 is horizontally rotatably installed inside the transfer bin 5. One end of the shaft 15 extends to the inside of the air inlet 3. The impeller 16 is installed at the end of the shaft 15 located inside the rotating mechanism 13, and the incomplete gear 17 is installed at the end of the shaft 15 away from the impeller 16. The driven gear 18 is installed at the end of the reciprocating screw 8, and the driven gear 18 is meshed with the incomplete gear 17.

[0032] Local working principle: During the process of smoke entering, since the smoke has a certain flow velocity, it will control the rotation of the impeller 16 after passing through the air inlet 3, and the impeller 16 will drive the uniform rotation of the incomplete gear 17. The incomplete gear 17 controls the driven gear 18 to rotate slowly, thereby controlling the rotation of the reciprocating screw 8.

[0033] In this embodiment, an inner tube 14 is fixed inside the air inlet 3 , the inner diameter of the inner tube 14 is smaller than the inner diameter of the air inlet 3 , and the impeller 16 is located inside the inner tube 14 .

[0034] Partial working principle: The use of the inner tube 14 can increase the flow rate of the flue gas when passing through the air inlet 3, ensuring that the stable rotation of the impeller 16 can be controlled.

[0035] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A waste heat recovery device for a chemical plant, comprising a heat exchange box (1) and an exhaust port (2) and an air inlet (3) respectively located at two ends of the heat exchange box (1), characterized in that: Both ends of the heat exchange box (1) are fixed with partitions (4), and a transfer chamber (5) is formed between the side of the partition (4) and the end of the heat exchange box (1). Air guide pipes (6) are evenly arranged between the two groups of partitions (4) and are parallel to each other. The top and bottom of the outer side of the heat exchange box (1) are provided with water pipe joints (7), and the water pipe joints (7) are located between the two groups of partitions (4). A reciprocating screw rod (8) is rotatably installed at the middle position of the two groups of partitions (4), and the reciprocating screw rod (8) is arranged on the upper side of the reciprocating screw rod (8). A slider (9) is provided which slides along the length direction of the reciprocating screw (8), a sliding plate (10) is fixed on the outer side of the slider (9), the air guide pipe (6) passes through the inside of the sliding plate (10), a sliding hole (11) which cooperates with the air guide pipe (6) is opened on the sliding plate (10), and bristles (12) are provided on the inner side of the sliding hole (11), and a rotating mechanism (13) for controlling the rotation of the reciprocating screw (8) is provided inside the transfer bin (5) at one end of the heat exchange box (1) close to the air inlet (3).

2. A waste heat recovery device for a chemical plant according to claim 1, characterized in that: A gap is left between the outer side of the sliding plate (10) and the inner wall of the heat exchange box (1), and a guide hole is provided on the sliding plate (10).

3. A waste heat recovery device for a chemical plant according to claim 1, characterized in that: The air guide tubes (6) are evenly distributed in a ring array between the two groups of partition plates (4), and the air guide tubes (6) are made of a copper-aluminum alloy.

4. A waste heat recovery device for a chemical plant according to claim 1, characterized in that: The ends of the exhaust port (2) and the air inlet (3) are both provided with flanges, and mounting holes are evenly arranged on the flanges.

5. A waste heat recovery device for a chemical plant according to claim 1, characterized in that: The rotating mechanism (13) comprises a shaft (15), an impeller (16), an incomplete gear (17) and a driven gear (18); the shaft (15) is horizontally rotatably mounted inside the transfer bin (5); one end of the shaft (15) extends to the inside of the air inlet (3); the impeller (16) is mounted on the end of the shaft (15) located inside the rotating mechanism (13); the incomplete gear (17) is mounted on the end of the shaft (15) away from the impeller (16); the driven gear (18) is mounted on the end of the reciprocating screw (8), and the driven gear (18) is meshed with the incomplete gear (17).

6. A waste heat recovery device for a chemical plant according to claim 5, characterized in that: An inner tube (14) is fixed inside the air inlet (3), the inner diameter of the inner tube (14) is smaller than the inner diameter of the air inlet (3), and the impeller (16) is located inside the inner tube (14).

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